Finding the Fourth Proportional to 9,181.72, 12,638.10 and 7,673.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,181.72 : 12,638.10 = 7,673.08 : x
2. Step 2: Convert to fraction form
   9,181.72/12,638.10 = 7,673.08/x
3. Step 3: Cross multiply
   9,181.72x = 12,638.10 × 7,673.08
4. Step 4: Simplify right side
   9,181.72x = 96,973,152.35
5. Step 5: Solve for x
   x = 96,973,152.35/9,181.72
6. Step 6: Final answer
   x = 10,561.55